Power-hammer.



PATENTED MAR. 3. 1903.

J. DELANE.

POWER HAMMER.

APPLIUATION FILED SEPT. 23, 1901.

N0 MODEL.

No. 722,087. PATENTED MAR. 3, 1903. J. DELANE.

POWER HAMMER.

APPLIOATION FILED SEPT. 23, 1901. N0 MODEL. 3 SlllS-SHBET 2.

wihwogg,

` PATBNTED MAR. s, 1903.

J. DBLANE.

POWER HAMMER.

APPLIUATION FILED SEPT. 23, 1901.

3 SHEETS-SHEET 3,

N0 MODEL.

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JOHN DELANE, OF BROKEN BOV, NEBRASKA.

POWER-HAM Nl ER.

SPECIFICATION forming part of Letters Patent No. 722,087, dated March 3,1903.

Application filed September 2S, 1901. Serial No. 76,244. (No model.)

To a/ZZ whom it may concern:

Be it known that I, JOHN DELANE, a citizen of the United States ofAmerica, residing at Broken Bow, in the county of Custer and State ofNebraska, have invented a new and useful Improvement in Power-Hammers,of which the following is a specification.

My invention relates to an improvement in power-hammers, and moreparticularly to that class of power hammers technically known as oliversThe objects attained by my invention are, first, improved means wherebythe force of the recoil of the hammer or other implement is transmittedinto energy for effecting in part the succeeding stroke; second, theprovision of a device whereby there is no deadpoint; third, theprovision of a mechanism capable of affording a wide range ofadjustability at various heights and at various radii; fourth, theprovision of means whereby to lock the device at any point in either ofits adjustments; fifth, the provision of means whereby one face of thestriking or other implement may be quickly and easily substituted foranother,and,sixth, to provide means whereby the speed of the strokes maybe regulated.

In order to obtain the foregoing objects, my invention consists in aframe secured to a post adjustably and pivotally supported in a socket,the frame in turn supporting a pivot-head suitably braced, whichpivot-head is provided with tension devices, preferably springs, ofdiffering strength on either side of the fulcrum of the head. Thepivot-head is also provided with a sleeve adapted to receive the handleof the hammer or other implement, and the handle is provided withsuitable devices, such as collars, whereby the handle may be removablysecured in and to the sleeve.

In order to lock the frame at any desired height, I provide a means, tobe hereinafter described, which is secured to the frame and havingsliding connection with a suitable bar supported upon the upper end ot'the socket, and as a means for locking the post against undesirablerotation I provide a securing means located on the socket below theframe, which securing means is permitted access to the post and isautomatically retained in locked position.

My invention also consists in certain features and details ofconstruction and combinations ofparts,as will be more fully describedhereinafter and particularly pointed out in the claims.

In the accompanying drawings, Figure lis a perspective view of myinvention. Fig. 2 is a perspective view taken from the side op posite toFig. l. Fig. 3 is a detail perspective view of the post'and socket,parts being omitted and broken away to disclose the means forlongitudinally adjusting the post and frame. Fig. 4 is an enlargeddetail sectional view of one pair of the superimposed sleeves,disclosing the manner in which they are secured upon the handle of animplement. Fig. 5 is an enlarged detail view of the rear pair of sleevesshowing, the means of engagement with the pivot-head sleeve; and Fig. Gis a detail end view of a pair of the superimposed slotted sleeves.

l represents the support, within which a deep socket A is secured andrigidly fastened against movement in any direction. This support may beplaced under the ooring, as shown,and thesocketextends upward through ahole out in the door.

The socket A is hollow and preferably formed of metal, although it maybe of any other suitable material,and it extends upward a short distancefrom the oor-line. scopically received within the socket is the post B,which may be composed of metal and may be inserted in or withdrawnentirely from the socket, as desired.

As a means for preventing accidental rotation of the post in the socketI provide the following adjustable and automatic locking means: Fittingabout the socket A at a convenient height from the floor is an opencollar 2, secured by means of rivets, bolts, or what not to the socket.The projecting wings 3of the open collar are provided with aperturesdesigned to receive adjustable bolts or screws 4 therein, whereby totighten the collar about the socket. Upon one of these bolts 4 apeculiarly-formed hooked friction-shoe 5 is pivoted and adapted to swingthereon and having a flat inner face G, which may be faced Tele? IOO \is slidably secured, whereby to automatically retain the shaft in alowered position.r

The eccentric 9 is so located on the lever that when the arm is loweredits Widest diameter forces the face 6 of pivoted shoe 5 rigidly againstthe post B through the elongated slot 7 and holds it there. When thelever is raised, the eccentric is released from contact with the rear offace 6; but in revolving with the lever its widest diameter comes incontact with the hook-shaped end 11 of the shoe, thereby withdrawingface 6 from the slot 7 and unlocking the post B, permitting itsrevolution or raising in the socket. The weight may be adjusted on lever8 to adjust the amount of frictional contact between the face 6 of shoe5 and the post B. It is also evident that post B may be provided withlongitudinal slots whereby to receive the face of the shoe, if desired.

Proceeding now, the post at its upper end is divided to right and left,the sections 12 12 being secured to a frame C by means of bolts. Thisframe is composed of a U-shaped body portion 13, the arms 14 of the bodyportion passing on either side of the post B. To the outer ends of thesearms are secured by bolts or other means L-shaped pieces 15, theirupright portions 16 extending upward on either side ofthe post B andtheir horizontal portions yT extending away from the post B. The outerends of these lateral portions are connected by a tie 18, securedthereto by bolts, which adds materially to the strength of the frame.Braces 19 extend from tie 18 and the outer corners of U-shaped portion13 `to the uprights 16, to which they are connected by bolts, thesections 12 12 of post B being secured to the uprights by the samebolts. Bent bolts 2O are secured to the tie 18, and vhinged to thesebolts by means of eyeholes at its ends is a treadle 21, its arms passingon either side of the post B. Secured by hook-bolts 22 to this treadle2l near its closed end is a cross-bar 23, to the center of which thetreadle-bar 24 is fastened, the outer end of the bar being attened forplacing the foot thereon.

To the ends of the uprights 16 bearingboxes 25 are secured, their lowerends resting against braces 19, whereby a portion of the weight issupported thereby. `A pivot-head 26 is held and supported in thebearing-boxes 25 by means of a pivot-shaft 27, secured to the under sideof the head, its ends forming into journals receivablein the boxes. Thepivothead operates between the uprights 16 and is provided at its rearend with a double saddle-hook 28, slidingly secured to the pivothead bymeans of clamp 29. The main body portion 28' of this hook iswedge-shaped and may be adjusted longitudinally beneath the clamp 29when the latter is loosened,the sides of the wedge-shaped body portionbinding against the studs 29', which fasten the clamp 29 to thepivot-head, whereby to prevent the entire disengagement of thesaddle-hook and pivot-head and also to limit the longitudinal movementthereof. A cross-piece 30 is secured to the horizontal portion 17 of theL- shaped frame, and hooks 31 are loosely held therein by being boltedonly on their lower ends, thus permitting a limited amount of play.Strong closely-coiled springs 32 connect the hooks 31 with T-hook 28,which operate to retain the pivot-head in a raised position withreference to the work.

The pivot-head may be provided with suitable metallic plates 33 upon itsupper and lower faces, whereby to strengthen and prevent it fromwearing.

On the under surface of the pivot-head, on the side opposite the springs32, is an approximately rectangular leverage-frame 34, which, togetherwith a loop 35, which is fastened to the inside surface of the upperportion of the frame, is secured to the pivot-head by means of boltspassing therethrough and through a block 56 on the upper face of thepivot-head, which block aords a larger bearing-surface for the tensionbrought to bear on the loop. This leverage-frame is located in front ofthe pivoted shaft 27, and an adjustable connection,consisting of a chain36 or other flexible device, connects the loop and the U-shaped hingedframe 21, the chain passing under the frame 2l on either side of thetreadle-bar 24, which retains the chain in position. A depending bracket37 is secured to the under surface of the pivot-head near its forwardend and also to the leverage-frame 34, and to this bracket is secured arecoil-spring 38, connected to the frame 13 by means of a chain 57 orother flexible device.

A sleeve 39 is secured in and longitudinally of the pivot-head 26 andprojects slightly beyond at either end. At the rear end this sleeve isprovided with a plurality of lockingrecesses 40, preferably rectangularin shape. This sleeve is designed to receive and retain the handle 41 ofa hammer or other implement which is inserted therein and extendsoutward from either end of the sleeve. The handle is provided withcollars 42 43, rigidly secured forwardly and rearwardly, respectively,of the pivot-head. The collars 42 and 43 are constructed as follows: Asplit sleeve 44 is first placed on the handle, this sleeve tapering indiameter toward its rear end and provided with external screw threads.It

may also be internally threaded to enable it to bite into the handle, ifdesired. This sleeve 44 is also provided with a plurality of teeth IOCIIO

45, designed to be received in the recesses 40 of the sleeve 39. Acollar 46, tapering in a direction opposite to that of the sleeve 44 andinternally screw-threaded, is screwed upon the split sleeve, therebycausing it to grip the handle at any desired point, and a lock-nut 47 isscrewed on the rear end of the split sleeve, holding everything tight.

A spring 48 is located between collar 42 and the sleeve 39, therebydrawing teeth 45 of collar 43 into the recesses 40 in the sleeve 39 andlocking the handle against rotation. When it is desired to use anotherface of the tool, the handle is forced inward against the tension ofspring 48 and then returned in the sleeve 39 to bring the other faceinto play.

The handle is then released, and the springv once more forces the handleoutward, bringing the teeth into the recesses and locking the handle.

Of course it will be noted that the length of the handle extendingforwardly of the pivot-head can be adjusted by means of the removableand adjustable collars 42 43, which can be placed so as to compressspring 48 more or less, as desired.

As a means for adjusting and locking the frame on the post I provide thefollowing mechanism: Secured to the uprights 16 is a cross-piece 49 forgiving additional strength thereto. Located between these two uprights16 and guided thereby is a plurality of blocks 50, having semicircularrecesses formed in their adjacent ends, the semicircular recessesadapted to receive the post B therein. These blocks are bolted fast tothe crosspiece 49. A loop 51 is secured to these blocks, and passingthrough the loop is an upright bar 52, perforated at intervals toreceive a pin 53 therein. The lower end of this bar is provided with asplit collar 54, which encircles the post B and rests upon the upper endof the socket A. A bolt connects the two open ends of the split collar,whereby it may be made fast to the post B, if desired.

When it is desired to raise the frame for the purpose of causing theface of the hammer to strike squarely on the anvil or high swages, theentire frame is lifted, it being guided in loop 5l and by block 50,surrounding post B, until the desired height is reached, whereupon thepin,which has been removed from one of 'the perforations in bar 52, isinserted in the one just underneath the loop 51, which may have a recess55 formed therein to receive it, and thus support the frame in a higherplane than before. By means of this adjusting device any desired heightmay be obtained, and by means of the locking device hereinbeforedescribed the hammer may be swung in a circle and operating on any ofits radii, as necessary.

The operation of the device maybe briefly described as follows: When itis desired to cause the hammer to strike a blow on the anvil, theoperator places his foot on treadlebar 24 and presses down sharplythereupon.

The impulse will be transmitted to the hinged frame 21, against whichthe treadle bears and to which it is connected. This will of courseswing downward on its hinged connections with bar 18 and draw the chain36, connected to the loop 35 on leverage-frame 34, thereby transmittingadownward impulse to the pivot-head 26 and hammer held thereby. Thisdownward impulse of course extends the springs 32, which when the hammerhas accomplished its stroke operate to return it to its raised position.The slack or play allowed 'in the double saddle-hook 28 and the hooks 31with reference to springs 32 corresponds to the slack or play permittedby the chain 57, attached to the recoilspring 38. The excessive strengthof springs 32, combined with the play permitted them and the slack inthe recoil-spring 38, greatly accelerates the speed or power of thehammer-stroke and also operates to cause the recoil-spring to start thesucceeding downward stroke of the hammer after the rebound without theaid of the treadle. The recoil-spring also serves to prevent the formingof a deadpoint during any position which the pivothead may assume.

In order to avoid the disadvantage of raising the treadle to anuncomfortable height for operation when the frame is raised, I providethe chain 36 with a hook 56, adapted to take into any desired link inthe chain 36, thus constituting an adjustable connection between theloop 35 and the treadle 24 and treadle-frame 2l. By this means thetreadle and treadle-bar may be allowed to remain at any desired heightwith respect to the floorline by simply lengthening or shortening thechain as the frame is raised or lowered', which permits the treadle toswing downward on its pivots when the frame is raised and elevates thetreadle when the frame is lowered, the treadle 21 being secured in sucha manner to the tie 18 that the operator may produce a full stroke ofthe hammer without lifting his foot to an uncomfortable height.

It is evident that slight changes other than those hereinbefore notedmight be made in the form and arrangement of the several parte describedwithout departing from the spirit and scope of my invention, and hence Ido not desire to limit myself to the exact construction herein setforthybut,

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A power-hammer provided with a slotted socket, a post revolubly andtelescopically supported therein, supporting means on the socket, asingle locking means pivoted in the supporting means, the locking meansadapted to engage the post through the slot in the socket and a singlemeans for causing the engagement of the locking means with andpermitting its disengagement from the post.

2. A power-hammer comprising a frame, a

IOO

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post to which the frame is secured, a slotted socket with which the posthas revoluble and telescopic connection, a collar stationarily securedto the socket, a faced shoe pivotally supported in the collar, the shoeadapted to engage the post through the slot in'the socket, an eccentricjournaled in the collar and adapted to engage the shoe and meansconnected with the eccentric for normally causing the engagement of theshoe with the post, the means capable of being operated to cause thedisengagement of the shoe from the post.

3. A power-hammer consisting of a frame, a post to which the frame issecured, a socket with which the post has revoluble and telescopicconnection, a bar supported on the socket, means secured to the frameand having sliding connection with the bar, and devices removablysecured to the bar whereby to support the frame when the latter is movedalong the bar in either direction.

4. A power-hammer consisting of a frame, a post to which the frame issecured, a socket with which the post has revoluble and telescopicconnection, a perforated bar supported by the socket, blocks secured tothe frame, a loop secured to the blocks and having sliding connectionwith the bar, and a pin adapted to enter the aperture next below theloop whereby to retain the frame in any of its adjusted positions.

5. A power-hammer comprising a socket, a post held in the socket, aframe supported by the post, a bar supported by the socket, meanssecured to the frame and having sliding connection with the bar anddevices engaging the bar at different points whereby the frame may beadjusted as to height.

6. A power-ham mer consisting of a frame, a post to which the frame issecured, a pivothead journaled in the Jframe, a sleeve recessed at oneend and supported by the pivot-head, the sleeve adapted to receive thehandle of any desired implement, collars adjustably secured on thehandle, one of the collars provided with teeth to engage the recesses inthe sleeve, and a tension device located on the handle and bearingagainst the opposite collar whereby to retain the teeth in engagementwith the recesses to prevent the accidental turning of the handle.

7. A power-hammer consisting of a frame, a post to which the frame issecured, a pivothead journaled in the frame, a sleeve recessed at oneend and supported by the pivot-head, the sleeve adapted to receive thehandle ot' any desired implement, collars adj ustably secured on thehandle, the collars colnposed of tapering split rings,oppositely-tapering nuts located thereon whereby to secure the splitrings to the handle, one of the split rings provided with teeth adaptedto engage t-he recesses in the sleeve, and a tension device operatingagainst the opposite collar whereby to removably retain the teeth inengagement with the recesses, which construction permits the handle tobe revolved when desirable to present another face of the implement.

8. A power-hammer consisting of a frame, a post to which the frame issecured, a pivothead journaled in the frame, a sleeve recessed at oneend and supported by the pivothead, the sleeve adapted to receive thehandle of any desired implement, collars adjustably secured on thehandle, the collars composed of tapering screw-threaded split rings,oppositely tapering nuts screwed thereon whereby to secure the splitrings to the handle, one of the split rings provided with teeth adaptedto engage the recesses in the sleeve, and a tension device operatingagainst the opposite collar whereby to removably retain the teeth inengagement with the recesses, and lock-nuts secured on the split rings.

9. A power-hammer comprising a revoluble and longitudinally-adjustablepost, a socket in which the post is held, locking means on the socketfor retaining the post in position, a frame supported on the post, apivot-head fulcrumed in the frame, a treadle hinged to the frame, thepost and frame removable from the socket when the locking means isreleased, an adjustable connection extending between the treadle andpivot-head, and separate tension devices connecting the pivothead oueither side of the fulcrum to the frame.

10. A power-hammer comprising a revoluble and longitudinally adjustablepost, a socket in which the post is held, locking means on the socketfor retaining the post in position, a frame supported on the post, apivot-head fulcrumed in the frame, a treadle hinged to the frame, across-bar secured to the treadle, a treadle-bar fastened to thecross-bar and extending beyond the outer end of the treadle, the postand frame removable from the socket when the locking means is released,an adjustable connection extending between the treadle and pivot-head,and separate tension devices connecting the pivothead on either side ofthe fulcrum to the frame.

1l. A power-hammer comprising a revoluble and longitudinally-adjustableframe, a pivot-head fulcrumed in the frame, a treadle hinged to theframe below the pivot-head, the treadle simultaneously. rotatable andlongitudinally adjustable with the frame, an adjustable connectionextending between and connecting the pivot-head and treadle, tensiondevices loosely securing the frame and pivot-head on one side of thefulcrum thereof and elastic connection loosely connecting the pivot-headand frame on the opposite side of the fulcrum. j

12. Apower-hammer comprising asuitablysupported frame, a pivot-headfulcrumed therein, saddle-hooks secured to the pivothead, bolts havingloose and sliding connection with the frame, tension devices extendingbetween and connected to the saddle- IOO IIO

hooks and bolts at their opposite ends whereby the tension means arepermitted a slight play, a treadle pivoted to the frame and adjustablemeans extending between and connected to the treadle and pivot-headwhereby to operate the latter.

13. A power-hammer provided with a rotatable andlongitudinally-adjustable frame, apivot-head fulcrumed thereon, atreadle hinged to the frame and rotatable and vertically adjustabletherewith, tension means connecting the pivot-head and frame on one sideof the fulcrum, the tension means loosely secured to the frame, adepending leverageframe secured to and 4beneath the pivot-head on theopposite side of the fulcrum, a loose elastic connection secured to thelower end of the leverage-frame and to the frame, respectively, andlongitudinally adjustable means connecting the treadle and pivot-head.

14. A power-hammer comprising a trame, a treadle hinged thereto, apivot-head journaled in the frame, a saddle-hook adjustably secured tothe pivot-head, bolts loosely supported in the frame, springs connectingthe hook and bolts, a bracket secu red to the opposite end of thepivot-head, a recoil-spring suspended from the bracket, flexible meansconnecting the recoil-spring and the frame, and a connecting meansbetween the pivothead and treadle whereby when the treadle is rocked tooperate the pivot-head.

15. A power-hammer comprising a frame, a pivot-head journaled therein,the pivothead provided with an aperture extending therethrough andadapted to receive the handle of an implement, a plurality of meansadjust-ably secured to those portions of the handle extending outside ofthe pivot-head and adjacent thereto, each of the adjustably-securedmeans comprising an inner compressible member and an outer memberremovably received upon the inner member to compress the latter, atension device extending between one of the adjustable securing meansand the pivot-head, the opposite adjustable securing means adapted toyieldingly engage the pivothead.

16. A power-hammer comprising a frame, al post supporting the frame, apivot-head journaled in the frame, means in the pivothead adapted toreceive the handle of any desired tool, locked means secured to thehandle on either side of the pivot-head, and outside thereof, meanslocated between one of the locked means and the pivot-head whereby tocause the engagement of the other locked means with the pivot-head tosecure the tool in place.

17. A power-hammer consisting of a frame, a post to which the frame issecured, a pivothead journaled in the frame, asleeve recessed at one endand supported by the pivoted head, the sleeve adapted to receive thehandle of any desired implement, collars adjustably secured on thehandle, the collars composed of tapering split rings, opposite taperingnuts located thereon whereby to secure the split rings to the handle,one of the split rings provided with teeth adapted to engage therecesses in the sleeve, and a tension device operating against theopposite collar whereby to removably retain the teeth in engagement withthe recesses, and lock-nuts secured on the split rings.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOHN DELANE. Witnesses:

Moens LEWIS, ALPHA MORGAN.

